Skiving-machine.



N. V. DYER.

SKIVING MACHINE.

APPLICATION FlLED OCT. 9. 1914.

THE NORRIS PETERS Ca, PHOTO-LITHQ, WASHINGTON. D. C.

i or

n era PAT 'r r sen NEWELL V. DYER, OF HOLBBOOK, MASSACHUSETTS.

SKIVING-MAOHINE.

Specification of Letters Patent.

Application filed October 9, 1914. Serial No. 865,932.

following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates particularly to machines for skiving or trimming the edges of pieces of leather of the type in which a rapidly rotating disk-shape knife acts upon the work which is fed to the knife by means of a feed roll. An example of such machines may be seen in the patent to Amazeen, No. 243,931, and this invention relates more particularly to the means for guiding or gaging the leather as it is fed upon the feed roll to the knife.

The particular object of the present invention is to make it possible to skive both a narrow scarf and a wide scarf on the same piece of leather on the same machine with one handling of the piece and without changing the guide or gage between the operations.

In the preparation of leather for shoes, it is necessary to skive a wide scarf and a narrow scarf on the different edges of the same piece and in the art of skiving as heretofore developed, the skiving of a narrow scarf and of a wide scarf on the same piece is made the subject of two operations, 6. 9., the wide scarf on the pieces is skived on one machine, and the pieces are then picked up and taken to another machine on which a narrow scarf is skived on the same piece, as previously to my invention it has been impossible to complete both operations (of skiving a narrow scarf and a wide scarf) on the same-machine without a readjustment of the guide or gage on the feed roll between the operations. The present invention permits both of these operations on the same machine without any readjustments of the gage or guide between the operations and with one handling of the piece of leather.

My invention may be described as a gage or guide to be used in combination with the usual guide on machines of the character described, and in combination with any feed roll, but preferably with one with my provenient as shown in the accompanying drawing having a groove or depression on its outside surface edge.

I attain the ob ects above set forth by the Patented May 11, 1915.

mechanism illustrated in the accompanying drawing in Which- Figure 1 represents a side view of my device attached to the usual guide on machines of the character described in combination with a feed roll and a disk wheel cooperating with said feed roll. Fig. 2 represents a top view of my device attached to the usual or standard guide.

Numeral 3 is a bracket to which is attached a standard guide 1 a; and 6 is a disk wheel cooperating with the feed roll; 7 is a screw and cooperating spring holding the standard guide 4: a" all of which are the old parts to which my improvement relates and in respect to which I claim nothing new.

The plate 8 with the upright bored portions 9 and 10 constitute the frame of my device, through which and through 9 and 10 is inserted tie adjusting screw 11. The adjusting screw 11 passes through the lug 12 which is pivotally connected with the guide arm 13, and thus the adjusting screw 11 adjusts horizontally the guide arm 13 to relative positions adjacent to the feed roll. To the arm 13 is attached a block 14 with a rounded protruding base 15, so designed that pieces of leather may be readily held against it or introduced underneath it. 16 is a bent spring placed upon a pin 17, one end of which is bent down upon and rests upon the plate 8 and the opposite end presses upon the arm 13 and is vertically adjustable on the screw 18 so as to press relatively upon the arm 13. To the upright portion 9 is attached a bracket 19 through which is passed an adjustable screw 20 with a flattened end which acts as a hold for the arm 13 to prevent the block 15 from bearing too hard upon the feed roll. 21 is a thumb screw which holds both the standard guide and my device to the bracket 3. 5 is a feed roll having on its outside surface edge the depression or groove 29. which is designed to prevent a bulging or shouldering of the leather as it is fed on the feed roll to the knife. All of the parts and devices being numbered 8 to 22 inclusive relate distinctly to my improvement and are claimed as new.

I claim, therefore,

1. In a machine of the class described, the combination of a feed. roll and yieldingly mounted adjustable means, having a part adjacent said feed roll for gaging or guiding leather arranged to permit said leather to be introduced underneath or held against said part.

2. In a machine of the class described, the combination of a feed roll and an adjustable gage or guide having a projecting arm having attached thereto a block with a protruding base yieldingly held against the feed roll in such manner as to permit leather to be introduced underneath or held against said block.

3. In a machine of the class described, the combination of a suitable feed roll and a yieldingly mounted guide or gage arranged to permit leather to be introduced either against the guide or gage or underneath it, substantially as described.

4. In a machine of the class described, the combination with a suitable feed roll of an adjustable gage having a detachable block with a protruding base held against the feed r011 by holding means permitting the introduction of leather either underneath the block or against it.

In testimony whereof, I have aflixed my signature, in the presence of tWo Witnesses.

NEWELL V. DYER.

I/Vitnesses:

ALFRED C. MAGAW, H. HALLETT THAYER. 7

Copies of this patentimay be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C. 

